NHIDCL/RODDN/NH07/RC/26-27

Scaling of rock chunk lying on the slope i/c all cost of machinaries, cost of crackmite powder, if required, making the ramp i/c of all cost of labour, material, breaking of rock piece using breaker, and disposal of muck within a lead of 5km as per frawings and direction of Engineer-in-charge, Technical Specifications.

Seeding and Mulching (Preparation of seed bed on previously laid top soil, furnishing and placing of seeds, fertilizer, mulching material, applying bituminous emulsion at the rate of0.23 litres per sqm and laying and fixing jute netting, including watering for 3 months all as per clause 308)

Supply and installation of high tensile rolled cable net with single/double knot connection having aperture size not more than 300mm in one direction and minimum longitudinal tensile strength of 220 KN/M and punching resistance 350 KN, comprising of minimum 10mm dia wire rope cable with steel core with a minimum breaking load of 63kN. The tensile strength of wire of the cable should be 1770 N/sqim having corrosion protection of Zn Coating Class A or 95% Zn 5% Al Class-B Coating as per IS/ISO-17746-2016 for treatment of slope including all cost of material (net, boundary rope 7 rope anchior etc comprising of the complete system), labour, special labour and T&P required to complete the work in all respect in accordance with drawings, Technical specifications and as per the direction of Engineer-in-charge. Product Manufacturer shall have in-house test facility for conducting longitudinal tensile strength and puncturing resistance test and shall be responsible for carrying out both test (longitudinal tensile strength and puncturing resistance) during PDI per lot in presence of representative of E-I-C on his own expenses.

Supply and fixing of Double Twisted Mesh including all cost of material, labour and T&P required to complete the work in all respect with following properties: a. Mesh type : 6x8, Mesh opening : 60mm X 80mm b. Mesh Wire dia. 2.2/3.2mm (ID/OD), mechanically edged/selvedged with galvanization as per EN 10223-3, and shall have minimum 16 numbers of mesh openings per meter of mesh perpendicular to twist. c. Tensile strength (500 Mpa) at a minimum elongation of 10%. The minimum tensile strength of the mesh panel must be 34.0 KN/m (+/-5KN/m) in the parallel to the twist direction and 13 KN/m in the perpendicular to the twist direction in accordance with the requirements of IS 16014:2018. d. Zinc Coating: The coating weight shall be heavily coated and soft type conforming to the requirements of specification IS 4826:1972. Adhesion of Zinc Coating: No flakes or cracks shall be observed while testing for adhesion of zinc coating as per IS 4826:1972.ID/OD - Internal diameter/Outer diameter of Polymer coated wire.

Supply and installation of Self driven rock anchor made of 40CR material with outer dia of 38 mm and inner dia of 19 mm, Yield Load Carrying Capacity of Minimum 400 KN in soil / overburden/rock suitable for drilling placing and cement grouting. Installation with all accesries such as 76 mm dia drill bit, couplers, 10 mm thick base plate and nut and bolt complete in all respect including Cement pressure grouting through Hollow Soil Solid Rock Anchor of outer dia 38 in Rock/Overburden including all cost of material and equipments required to complete the grouting work at desired pressure.